Question

List 2/3 , 7/12 , and 3/4 from greatest to least thanks .

Answer 1

Forget the numerators, focus on the denominators for now. 3 an 4 are both multiples of 12, so we can multiply $\frac{2}{3}$ by 4 and $\frac{3}{4}$ by 3 to make all the fractions out of 12. This should make it easier to understand which one is the smallest / biggest. 

$\frac{2}{3}$ × 4 = $\frac{8}{12}$ 

$\frac{3}{4}$ × 3 = $\frac{9}{12}$ 

You leave $\frac{7}{12}$ as it is because it's already out of 12.

Now you can see that obviously, $\frac{3}{4}$ is the largest fraction, as 9 is the biggest when it's out of 12. $\frac{2}{3}$ is the second largest as it's 8 out of 12, which is smaller than 9 but bigger than 7. Obviously, the last is one is $\frac{7}{12}$.

So the order is:

$\frac{3}{4}$, $\frac{2}{3}$, $\frac{7}{12}$.

Answer 2

For this question you should know that:
2/3 = 8/12 
and 
3/4 = 9/12 
so now you can say:
7/12 < 8/12 < 9/12 
so: 
7/12 < 2/3 < 3/4 :)))
i hope this is helpful
have a nice day